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Upgrading the 1.6 certainly won't hurt and it will definitely help.
The first question is whether the open()s are slow because of network
operations being issued to the file server?
If so, are all of the requests being issued from within the same PAG?
If so, there is a four simultaneous RPC per file server per PAG limit
that you are bumping into.
If the data is something that should be accessed out of cache, then the
bigger question is why are the RPCs being queued?
To answer these questions it would be useful to know what the RPCs are.
Jeffrey Altman
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